42results about How to "Achieve inactivation" patented technology

The present invention relates to the method and equipment for purifying drinking water. Electric field is applied to active carbon fiber filtering material, so that current will flow directly through active carbon fiber filtering material while water to be purified flows through the active carbon fiber filtering material, and under water is thus purified under the action of both electric field and flow field. Owing to the collision between pollutant and bacteria with active carbon fiber and direct current action on bacteria to destroy the cell membrane structure, the said method of the present invention can inhibit the growth of the bacteria and kill bacteria without throwing antiseptic.

The invention relates to a water treatment sterilization method by ultraviolet catalysis hydrogen peroxide matched with chlorine/chloramine, belonging to the technical field of the sterilization in water treatment. The water treatment method is used for sterilizing the water by the chlorine/chloramine based on ultraviolet and hydrogen peroxide photocatalysis sterilization. The method comprises the steps of: adding 0.05-0.20mmol/L of hydrogen peroxide during ultraviolet irradiation, and feeding 0.10-0.20mg/L of chlorine into the water which is irradiated by the ultraviolet to sterilize; or adding 0.05-0.20mmol/L of hydrogen peroxide during the ultraviolet irradiation, and feeding 0.20-0.40mg/L of chloramine into the water which is irradiated by the ultraviolet to sterilize. The method is used for producing hydroxyl radical which is high in oxidability by the ultraviolet catalysis hydrogen peroxide, the deactivation effect to chlorine and ultraviolet-resistant sterilized microorganism is greatly improved due to the synergistic sterilization effect of the hydroxyl radical and the chlorine/chloramine, so that the biological safety and the chemical safety of the water can be guaranteed, and the method can be widely used for sterilizing and purifying drinking water.

The invention discloses a biological degradation method and degradation device for animal carcasses. The degradation method comprises the following steps of 1 raw material smashing, wherein animal carcass raw materials needing to be treated are smashed into blocks through a smashing machine; 2 high-temperature sterilizing and one-time degrading, wherein the smashed animal carcass raw materials are conveyed into a decomposition tank, high-temperature sterilizing bacteria and auxiliary materials for adsorbing oil and fat are added into the tank, then the decomposition tank is sealed and heated to 120 DEG C or above, stirring is performed in a timing mode in the heating process, standing is performed for 10-14 hours, and then the materials are discharged; 3 secondary degrading, wherein composting fermentation is performed on the animal carcass raw materials processed through high-temperature sterilizing and one-time degrading to complete secondary degrading. According to the method, sterilizing is safe and thorough, sterilizing, decomposing and waste gas condensing and recycling of the animal carcasses are achieved at a time in the decomposition tank, the application range is wide, produced organic fertilizer cannot damage crops, the technology is reasonable, operation is easy and convenient, and energy conversation and environmental protection are achieved.

The invention relates to the technical field of food, in particular to glutinous rice food and a preparation method thereof. The glutinous rice food comprises the following raw and auxiliary materials in percentage by mass: 15%-20% of water-milled glutinous rice flour, 40%-55% of malt syrup, 5%-9% of a compound emulsifying thickener, 0.6%-1.5% of trehalose, 0.5%-2.0% of beta-amylase, 1.2%-1.8% of shortening, 0-0.09% of edible salt and the balance of water, the DSC (differential scanning calorimetry) aging degree of the water-milled glutinous rice flour is less than or equal to 5%. It is found through experiments that the glutinous rice flour with the DSC aging degree smaller than or equal to 5% can guarantee the good anti-retrogradation characteristic in the shelf life of the product.

The invention relates to a silver-loaded diatom shell antibacterial ceramic filter core and a preparation method thereof. The preparation method comprises the steps: sequentially carrying out mixing,grinding, liquid phase mixing and drying on raw material particles containing a silver-loaded diatom shells, and then carrying out hot pressing sintering to obtain the silver-loaded diatom shell antibacterial ceramic filter core. Different from a process of preparing a blank firstly and then sintering and molding in the prior art, the preparation method disclosed by the invention has the advantages that hot pressing sintering treatment is carried out at the same time of pressing and sintering, so that the sintering temperature is relatively low, the porous structure of the silver-loaded diatomshell can be prevented from being damaged, and the compressive strength of the ceramic filter core can be greatly improved; and the prepared silver-loaded diatom shell antibacterial ceramic filter core has the nano-silver loading capacity of 0.15-0.4%, has excellent adsorption performance, has the filtering precision as high as 10-100 microns and the specific surface area of 65 m<2>/g, also has sterilization and inactivation effects, ensures the water quality safety of domestic water, prolongs the service life of the ceramic filter core, and further improves the market competitiveness of theproduct.

The invention provides a nucleic acid sample preserving fluid as well as a preparation method and application thereof, and belongs to the technical field of biomedicine. The nucleic acid sample preserving fluid is composed of sodium acetate, EDTA sodium salt, Tris, protease K, SDS, Triton X-100, SLS and DEPC triple distilled water. According to the invention, a collected sample is fully mixed witha virus lysis solution and a viral nucleic acid preserving fluid, so that the virus in the sample is inactivated, the integrity of viral nucleic acid in the sample is effectively ensured, and the collected sample can be transported and preserved for a long time under a normal temperature condition. The nucleic acid can be released by instantly cracking pathogens, and the nucleic acid can be prevented from being degraded by a protective agent, so that the nucleic acid sample preserving fluid has good practical production and application value.

The invention relates to the technical field of microbial fermentation, in particular to a production method of low-endotoxin gamma-polyglutamic acid, which comprises the following steps: S1, preparing gamma-polyglutamic acid fermentation liquor; s2, carrying out acid treatment on the gamma-polyglutamic acid fermentation liquor to adjust the pH value to 3.0-5.0, carrying out high-temperature treatment, cooling, decolorizing and filtering to obtain filtrate; s3, adding acid into the filtrate to adjust the pH value to 1.0-3.0, standing to separate out precipitate, and pumping away supernatant liquid; and S4, adding an organic solvent into the bottom precipitate, stirring and precipitating, pumping away the organic solvent on the upper layer, and drying the precipitate. The method is not easily polluted by microorganisms in the endotoxin treatment process, the process is simple and suitable for industrial production, and the content of the endotoxin in gamma-polyglutamic acid production is effectively reduced.

The invention relates to a treatment device, in particular to an inactivation treatment device for preparing allogeneic dressing skin. According to the invention, heating and gamma ray irradiation are integrated and he allogeneic dressing skin can be completely inactivated. The inactivation treatment device for preparing the allogeneic dressing skin comprises a base, wherein a shell is arranged at the top of the base; heaters symmetrically arranged on the inner wall of one side of the shell up and down; a collecting box arranged in the base in a sliding manner; a protection assembly arranged on one side of the shell; and a placement assembly arranged on the inner wall of one side of the shell. The allogeneic dressing skin is placed on the placing rack by a worker, and then the allogeneic dressing skin is heated by the heater, so that the inactivation treatment is realized.

The invention discloses a fresh air handling unit with purification, sterilization and disinfection functions and a purification, sterilization and disinfection process thereof. The fresh air handling unit comprises an air inlet chamber, a gas purifying chamber, a gas heating and disinfecting chamber, a gas mixing chamber, a fan chamber and an air outlet chamber from bottom to top. Air inlets are formed in the four side walls of the air inlet chamber, and a filter screen mounting opening is formed in one side of the gas purifying chamber. A filter screen sealing element is arranged outside the filter screen mounting opening. A gas purification filter screen is mounted in the gas purifying chamber, heat insulation layers are arranged on the four side walls of the gas heating and disinfecting chamber, heating plates are mounted in the gas heating and disinfecting chamber, catalytic ceramic particles are filled between the heating plates, and a porous partition plate is mounted at the top of the gas heating and disinfecting chamber. An air supplementing opening is formed in the opposite side wall of the gas mixing chamber, an air supplementing adjusting plate is arranged outside the air supplementing opening, and a gas mixing fan is installed in the gas mixing chamber. The fresh air handling unit with the purification and disinfection functions can effectively remove particulate matter, VOC and other harmful gases in the air, kill bacteria, viruses and other microorganisms in the air, purify and disinfect the air and can also be used for heating in winter.